<template>
  <div class="update-avatar">
    <img :src="img" ref="img" />
    <div class="toolbar">
      <span @click="$emit('close')">取消</span>
      <span @click="confirm">完成</span>
    </div>
  </div>
</template>

<script>
import 'cropperjs/dist/cropper.css'
import Cropper from 'cropperjs'
import {updateUserAvatar} from '@/api/user'

export default {
  name: 'update-img',
  props: ['img'],
  data () {
    return {
      cropper: ''
    }

  },
  mounted () {
    const image = this.$refs.img
    this.cropper = new Cropper(image, {
      viewMode: 1, // 只能在裁剪的图片范围内移动
      dragMode: 'move', // 画布和图片都可以移动
      aspectRatio: 1, // 裁剪区默认正方形
      autoCropArea: 1, // 自动调整裁剪图片
      cropBoxMovable: false, // 禁止裁剪区移动
      cropBoxResizable: false, // 禁止裁剪区缩放
      background: false // 关闭默认背景
    })
  },
  methods: {
    confirm () {
      this.$toast.loading({
        message: '保存中...',
        forbidClick: true,
        loadingType: 'spinner',
        duration: 0
      })
      try {
        this.cropper.getCroppedCanvas().toBlob(async blob => {
          const formData = new FormData()

          formData.append('photo', blob)

          const { data } = await updateUserAvatar(formData)

          this.$emit('close')
          this.$emit('update-avatar', data.data.photo)
          this.$toast('更新成功')
        })
      } catch(err) {
        this.$toast('更新失败')
      }

    }
  }
}
</script>

<style scoped lang="less">
.update-avatar {
  background: #000;
  width: 100%;
  height: 100%;
  .toolbar {
    position: fixed;
    bottom: 10px;
    width: 100%;
    display: flex;
    justify-content: space-between;
    font-size: 28px;
    color: #fff;
    padding: 0 15px;
    box-sizing: border-box;
  }
  img {
    display: block;
    max-width: 100%;
  }
}
</style>
